Bug ID 653772: fastL4 fails to evict flows from the ePVA

Last Modified: May 14, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0, 12.1.3.2

Opened: Mar 27, 2017
Severity: 3-Major

Symptoms

An accelerated flow is in the ePVA with no corresponding software connection.

Impact

ePVA can continuously send a packet. This might eventually result in a network outage.

Conditions

-- FastL4. -- ePVA. -- The other conditions under which this occurs are not well defined.

Workaround

Disable HW acceleration.

Fix Information

There are now no unknown accelerated flows.

Behavior Change

The default behavior is to ignore unknown HW accelerated flows (connections). This change will proactively evict unknown HW accelerated flows from the HW (ePVA).